ERGO-MMH - ERGONOMICS MANUAL MATERIAL HANDLING WhatisMMH?

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ERGONOMICS MANUAL MATERIAL HANDLING
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2 What is MMH? Manual materials handling (MMH) means  moving or handling things by lifting, lowering,  pushing, pulling, carrying, holding, or  restraining. MMH is also the most common  cause of occupational fatigue, low back pain  and lower back injuries .
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3 Can MMH affect your health? Approximately 25% of accidents  reported in industry each year are  related to MMH 60% of overexertion injuries  are due to lifting and lowering Low-back-pain overexertion injuries with significant lost time results in  less than one-third of the patients eventually returning to their previous  work Overexertion injuries in the U.S. occur to about 500,000 workers per  year. One in every 200 workers is afflicted by such disorders The 25-44 age group  has the highest incidence rate Total annual cost for back pain reaches $56 billion Mechanics, nurses, material handlers, operators of extractive, mining,  and material moving equipment are more susceptible Overexertion is the most common way  in which lost work-time injuries  occur
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4 What are the immediate health effects  of MMH ? Accidental injuries Sharp or rough surfaces, and falling and flying objects are  common causes of wounds, lacerations or bruises during  MMH  The worker can also suffer these injuries by falling or by  colliding with objects.  Fatigue A fast pace of work shortens the time between tasks and  allows the workers to restore their energy. As a result,  workers who try to maintain such a fast pace may become  increasingly tired as the shift progresses  Fatigue decreases workers' alertness, making them more  likely to act without due caution. This, in turn, increases their  risk for accidents. 
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5 What are the long-term effects of MMH? Chronic back pain  resulting from 1. Strains and cramps in the back muscles 2. Tears in the tendons connecting the back muscles to the  spine, or from sprains  3. Tears in the ligaments interconnecting the vertebrae (bones  of the spine)  It is the repetition , as in manual handling, that contributes most to the occurrence of injuries Recovery from back injuries can take a long time and further injury may occur, making the problem worse
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This note was uploaded on 12/19/2011 for the course ECON Econ203 taught by Professor Majdabpadawnan during the Spring '11 term at University of Maribor.

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ERGO-MMH - ERGONOMICS MANUAL MATERIAL HANDLING WhatisMMH?

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